Čačak (Serbian Cyrillic: Чачак, pronounced [tʃǎːtʃak]) is a city and the administrative center of the Moravica District in central Serbia. It is located in the West Morava Valley. According to the 2022 census, the city itself has a population of 69,598 while the city administrative area has 105,612 inhabitants.
The city lies about 144 km south of the Serbian capital, Belgrade. It is also located near the Ovčar-Kablar Gorge ("Serbian Mount Athos"), with over 30 monasteries built in the gorge since the 14th century.